JPH10299204A - Stair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the sending-in work of a stair into a construction site and the fitting work thereof and increase the support strength of the treads and the risers. SOLUTION: Metallic stair support frames to support both ends of the treads and the risers respectively are fixed to oppositely arranged wall faces surrounding the stair. The support frame 3 of the stair is composed of a plurality of frames 4 divided in the vertical direction of the stair. Each frame 4 is constituted of a fixed slender bar-shaped frame formed along the inclination of the stair and a step frame 6 integrally forming stepwise horizontal tread-supports 7 fitted to the upper face of the fixed frame 5 and vertical riser-supports 8. The fixed frame 5 and the step frame 6 are provided with fitting parts 11a, 11b fixed to the wall face which comes in contact therewith.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a staircase.

[0002]

2. Description of the Related Art Conventionally, as a staircase to be installed in a building body, for example, a steel staircase is prepared in advance in a factory, and the steel staircase is carried in and mounted on a site by a crane or the like. .

[0003]

However, in the above-described conventional example, the stairs are assembled in advance, so that the size of the stairs is large. There is a problem that a crane is required for loading, and the transportation becomes large. In addition, there is also a problem that since the transfer to the site is large, a crane or the like is required, which is troublesome and requires a large cost for construction.

An object of the present invention is to solve the above-mentioned problems, and it is possible to easily carry it into the site and install it on a wall surface, and to improve the supporting strength of a tread plate and a riser plate. It is an object to provide a stair that can be used.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a metal plate for supporting both ends of a tread plate 9 and a riser plate 10 on opposing wall surfaces 2 surrounding a staircase 1 respectively. A stair support frame 3 is attached, and the metal stair support frame 3 is composed of a plurality of divided frames 4 divided in the vertical direction of the stairs 1, and each divided frame 4 has an elongated bar shape along the slope of the stairs 1. A fixed frame 5 formed in
A step board frame in which a horizontal tread support section 7 attached to the upper surface of the fixed frame 5 and supporting a tread board 9 and a vertical riser support section 8 supporting a rise board 10 are integrally formed in a stepwise manner. And a wall mounting portion 11 fixed to the fixed frame 5 and the step board frame 6 by abutting against the wall surface 2.
a, 11b are provided, and by constituting in this way, each member constituting the stairs 1 can be easily carried into the construction site,
It can be easily attached to the wall 2 of the stairs 1 and constructed, facilitating on-site construction. Moreover, since the fixed frame 5 is formed in the shape of an elongated bar, the weight of the divided frame 4 can be reduced, and the wall mounting portions 11a and 11b are provided on both the fixed frame 5 and the step board frame 6. Wall 2
a, the strength of fixing to the step board 9 and the riser board 10 is further increased while the structure of the divided frame 4 is simplified and the weight is reduced by supporting the divided frame 4 on the wall surface 2. Can be improved.

The tread support portion 7 is formed integrally with a horizontal tread support piece 12 and a wall mounting portion 11b which is suspended in a direction perpendicular to the tread support piece 12 and abuts against the wall surface 2 to be fixed. Preferably, in this case, the wall mounting portion 1
1b will reinforce the tread support piece 12,
The strength of the tread support portion 7 to which a load is applied from above can be improved, and the wall mounting portion 11b can
Since it hangs down in a direction perpendicular to the direction 2 and is in contact with the wall surface 2, it can be easily attached to the wall surface 2.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A folded staircase 1A will be described below as an example of an embodiment of the present invention. As shown in FIGS. 2 and 3, this folded staircase 1A is formed in a J-shape or U-shape on the upper right, and opposing wall surfaces 2a surrounding the staircase 1A.
To 2c; 2d to 2e, a metal stair support frame 3 is attached.

The metal staircase support frame 3 comprises three sets of divided frames 4 divided into two sets in the vertical direction of the staircase 1. As shown in FIGS. 2 and 3, each divided frame 4 has a symmetrical lower divided frame 4A for supporting the tread plate 9 and the riser plate 10 in the straight stair portion 1a leading to the floor of the lower floor. Stairs 1b
Left and right asymmetrical center divided frame 4B for supporting the tread 9 and the riser 10 in the above, and a symmetric upper part for supporting the tread 9 and the riser 10 in the linear staircase portion 1c leading to the floor of the upper floor. And a divided frame 4C. In the figure, reference numeral 13 denotes a wall base, and reference numeral 14 denotes a rim.

Each of the divided frames 4A to 4C comprises a fixed frame 5 and a step board frame 6, as shown in FIG. The fixed frame 5 is formed in an elongated bar shape having an L-shaped cross section, and has a wall mounting portion 11 a and a step board frame 6.
And a horizontal mounting portion 5a to which the light emitting device is mounted. Further, in the step board frame 6, the tread board support portion 7 and the riser plate support portion 8 are integrally formed continuously in a stepwise manner. The tread support portion 7 is formed in an L-shaped cross section, and has a horizontal tread support portion 12, a wall attachment portion 11 b that hangs down in a direction orthogonal to the tread support portion 12 and abuts on the wall surface 2 and is fixed. Are integrally formed. 50 to 53 in the drawing are holes into which screws or nails are inserted.

As shown in FIGS. 5 and 6, connecting pieces 15 to 17 hanging downward are provided at connecting portions of the divided frames 4A to 4C. Below the 10, the connecting pieces 15, 16 and the connecting pieces 17, 18 are connected to each other by screws or the like. Here, the upper and lower 4 to 5 step treads 9 and the riser 10 provided in the straight staircase portions 1a and 1c are formed in the same shape, and accordingly, the lower divided frame 4
A and the upper divided frame 4C are also formed symmetrically. On the other hand, the tread 9 provided in the turning staircase portion 1b is
As shown in FIG. 12, a combination of substantially trapezoidal plate materials 4
One tread 9 and four risers 10 each having a length corresponding to the length of one side of the riser side of each tread 9 are used. And the center division | segmentation frame 4B which supports both ends of these step board 9 and the riser board 10 is formed left-right asymmetrically.

That is, the center divided frame 4B on the inner circumference side
As shown in FIGS. 7 to 11, there are four upper and lower tread support portions 7 and a riser support portion 8 which are attached in a stepwise manner over the three inner wall surfaces 2 d to 2 e in the turning step portion 1 b. Step board frames 6a to 6d are provided. Each of the tread support portions 7 is provided with a wall mounting portion 11, and a connecting piece 16 is provided at a lower end portion of the first tread support portion 7, and a fourth tread support portion 7 is provided. A connecting piece 17 is vertically provided at the upper end of the tread plate support portion 7 of each step.
Connecting pieces 116a to 116c (FIG. 7) which are connected to each other by screws or the like are provided vertically at connecting portions of the riser plate supporting portions 8 with each other.

On the other hand, the outer peripheral center divided frame 4B
Is, as shown in FIGS. 2, 5, and 6, a turning staircase portion 1b.
, Four long fixed frames 5 attached to the outer three wall surfaces 2a to 2c, and four long upper and lower tread plate support portions 7 and riser plate support portions 8 attached to the fixed frames 5. And a step board frame 6 having the following. The tread support 7 of each step is provided with a wall mounting portion 11b, and a connecting piece 16 (FIG. 5) is vertically provided at the lower end of the first tread support 7 so that the fourth step is supported. A connecting piece 17 (FIG. 6) is suspended from the upper end of the tread support portion 7, and the connection between the tread support portion 7 and the riser support portion 8 of each step is connected to each other by a screw or the like. Connection piece 16
a, 16c...

Next, an example of a procedure for constructing the folded staircase 1A having the above configuration will be described. First, a plurality of members (divided frames 4A to 4C, a plurality of treads 9, a riser 10 and the like) manufactured in a factory are carried into a site, and a straight staircase portion 1 is set at the site.
a on the opposing wall surfaces 2a and 2d of the lower frame 4A,
Opposing wall surfaces 2a to 2c of the turning staircase portion 1b; 2d to 2
The upper divided frame 4C is attached to the center divided frame 4B and the opposing wall surfaces 2c and 2f of the straight staircase portion 1c.

That is, the lower divided frame 4A is inclined in the same direction as the inclination direction of the stairs 1 so that the wall mounting portions 11a and 11b of the fixed frame 5 and the step board frame 6 are attached to the wall 2a.
The lower divided frame 4A is brought into contact with the wall surface 2a by driving nails 61 into the wall surface 2a from the holes 50, 51 provided on the wall surface attachment portions 11a, 11b in a state where the lower divided frame 4A is brought into contact with the wall surface 2d. Can be installed firmly.

[0015] A left-right asymmetric central division frame 4B is also provided.
As shown in FIGS. 2 and 7, are mounted on opposing wall surfaces 2a to 2c; 2d to 2e of the turning step portion 1b.
At this time, the inner side frame plates 6a to 6d (FIG. 7)
Each wall mounting part 1 is tilted in the direction of the stairs.
1 is fixed to each of the three inner wall surfaces 2d to 2e with nails or the like, and the outer peripheral side fixed frame 5 and the wall mounting portions 11a and 11b of the step board frame 6 are inclined in the inclination direction of the stairs. Each is fixed to the three wall surfaces 2a to 2c with a nail or the like.

Further, the upper divided frame 4C is inclined in the same direction as the inclination direction of the stairs 1 so that the wall mounting portions 11a and 11b of the fixed frame 5 and the step board frame 6 abut against the wall 2c (the same applies to the wall 2f). In this state, the wall 2 is inserted through the holes 50 and 51 provided in the wall mounting portions 11a and 11b.
By driving nails 61 into a, the upper divided frame 4C can be firmly attached to the wall surface 2c.

Further, the connecting piece 1 of the lower divided frame 4A
5 and the connecting piece 16 of the central split frame 4B are screwed together, and the connecting piece 18 of the upper split frame 4C and the connecting piece 17 of the central split frame 4B are screwed to each other. Is completed. Of course, the procedure for attaching the staircase support frame 3 is not limited to the above.

Thereafter, both ends of the tread 9 are placed on the tread support portions 7 of the step board frame 6 of the divided frames 4A to 4C, and screws 60 (FIG. 4 (a)) are attached to the tread plate 9 from the holes 53 of the tread support portion 7. ) To mount the tread plate 9, put both ends of the riser plate 10 on the riser plate support portion 8, and drive the screw 60 into the riser plate 10 from the hole 52 of the riser plate support portion 8. The stairs 1 as shown in FIG. 3 are constructed by inserting and installing the riser plate 10. The attachment of the tread 9 and the riser 10 is not limited to the example shown in FIG. 4. For example, screws or nails may be driven in from the tread 9 and the riser 10. The tread 9 and the riser 10 may be fixed by an adhesive or the like without using screws or nails.

By dividing the metal stair support frame 3 into a plurality of divided frames 4A to 4C, each member constituting the stairs 1 can be easily carried into the construction site, and the stairs 1 Since the fixed frame 5 of the divided frames 4A to 4C can be easily attached to the wall surface 2 and formed, the weight of the divided frames 4A to 4C can be reduced. Accordingly, it is easy to move the work site at the construction site by hand without using a heavy machine such as a crane, or to attach it to the wall surface 2, and furthermore, the fixed frame 5 and the plate frame 6 formed in the shape of an elongated bar. Both of the wall mounting portions 11a,
Since 11b is provided, it can be firmly attached to the wall surface 2 and the divided frames 4A to 4C are attached to and supported by the wall surface 2 so that the structure of the divided frames 4A to 4C is simplified and the weight is reduced while the structure is simplified. The strength can be improved. In addition, by attaching the divided frames 4A to 4C to the wall surface 2 in a state of being inclined in the same direction as the inclination direction of the stairs 1, the stepped frame 6
Can be accurately positioned, the horizontality of the tread 9 can be easily secured, and the construction accuracy can be increased while reducing the number of construction steps.

The step board support portion 7 of the step board frame 6
Since the wall mounting portion 11b is integrally formed below the horizontal tread supporting member 12, the tread supporting member 12 is reinforced by the wall mounting portion 11b, and the strength of the tread supporting portion 7 to which a load is applied from above is improved. In addition to this, the wall mounting portion 11b hangs down in a direction orthogonal to the tread plate support piece 12 and abuts against the wall surface 2, so that the work of mounting the wall mounting portion 11b to the wall surface 2 is further facilitated. Further, since the stair support frame 3 is formed of a metal material, for example, the tread plate 9
If the riser 10 is made of a quasi-incombustible material or the like, a staircase having a fireproof structure can be obtained.

Further, a stair support frame 3 is attached to the opposing wall surface 2 surrounding the stairs 1, and both ends of the tread plate 9 and the riser plate 10 are supported by the stair support frame 3, so that various stair widths are different. It can be used in common for stairs of size. In addition, even if only one of the opposed wall surfaces 2 is constructed and the other wall surface is not constructed, or if a part of the opposed wall surface is not constructed, The split frame 4 of the stair support frame 3 can be partially mounted on the stair support frame, and the stair support frame can be mounted before all the walls are constructed. is there.

In the above-described embodiment, the U-shaped or J-shaped folded staircase 1A changing by 180 ° to the upper right has been described. Of course, the present invention can be widely applied to other types of stairs other than the folded staircase 1A. Also,
A part of the wall surface 2 is composed of a pillar material, and the pillar material
May be attached.

[0023]

As described above, according to the first aspect of the present invention, a metal stair support for supporting both ends of a tread plate and a riser plate on opposing wall surfaces surrounding a stair, respectively. A frame is attached, the metal stair support frame is composed of a plurality of divided frames divided in the vertical direction of the stairs, and each divided frame is a fixed frame formed in an elongated bar shape along the slope of the stairs, A step board frame in which a horizontal tread board support portion attached to the upper surface of the fixed frame and supporting the tread plate and a vertical riser plate support portion supporting the riser plate are integrally formed in a step shape; Each of the fixed frame and the step board frame is provided with a wall mounting portion that is fixed in contact with the wall surface, so that the metal stair support frame is divided into a plurality of divided frames, so that each member constituting the stairs is formed. It can be easily transported to the construction site, can be easily attached to the wall of the stairs, and can be moved by hand without using heavy equipment such as a crane, or mounted on the wall at the construction site. It becomes easier. In addition, by forming the fixed frame into a slender bar shape, the weight of the divided frame can be reduced, and both the fixed frame and the step board frame have wall mounting portions, so that the divided frame can be firmly attached to the wall surface. It can be attached. Furthermore, since the divided frame is supported by the wall surface, the structure of the divided frame can be simplified and the weight can be reduced, and at the same time, the supporting strength of the tread and riser can be further improved. By mounting it on the wall in the same direction as the direction of inclination, the plate frame can be positioned accurately, the horizontality of the tread can be easily secured, and the construction man-hour is reduced, while the construction accuracy is reduced. Can be enhanced.

According to a second aspect of the present invention, in addition to the effect of the first aspect, the tread support portion includes a horizontal tread support piece,
The tread support piece is reinforced by the tread support piece, and the load is applied from above because the tread support piece is integrally formed with the wall mounting portion that hangs down in a direction orthogonal to the tread support piece and abuts against and is fixed to the wall surface. The strength of the tread support portion can be improved, and the wall mounting portion is hung down in a direction perpendicular to the tread support pieces and abuts against the wall, so that the work of mounting the wall mounting portion to the wall is further facilitated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an embodiment of the present invention.

FIG. 2 is a plan view before installing a tread plate and a riser plate of the folded staircase according to the first embodiment.

FIG. 3 is a plan view of a folding staircase according to the first embodiment.

4A is a cross-sectional view taken along the line AA in FIG. 3, and FIG.
FIG. 7 is a sectional view taken along line BB of FIG.

FIG. 5 is a side view of a lower divided frame and a center divided frame of the above.

FIG. 6 is a side view of the center divided frame and the upper divided frame of the above.

FIG. 7 is a perspective view showing an attached state of the center division frame according to the embodiment.

8A and 8B show a first step board frame in the turning staircase portion, in which FIG. 8A is a front view, FIG. 8B is a side view, and FIG.
Is a plan view.

FIGS. 9A and 9B show a second step board frame in the turning staircase part, in which FIG. 9A is a front view, FIG. 9B is a side view, and FIG.
Is a plan view.

FIGS. 10A and 10B show a third step board frame in the turning staircase portion, in which FIG. 10A is a front view, FIG.
(C) is a plan view.

11A and 11B show a fourth step board frame in the turning staircase portion, in which FIG. 11A is a front view, FIG. 11B is a side view,
(C) is a plan view.

FIG. 12 is an exploded plan view of a tread plate and a riser plate in a turning staircase part of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stairway 2 Wall surface 3 Stair support frame 4 Dividing frame 5 Fixed frame 6 Step board frame 7 Step board support section 8 Raised board support section 9 Tread board 10 Raised board 11a, 11b Wall mounting section 12 Tread board support piece

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Joji Katsuma Asahi Kasei Kogyo Co., Ltd. 1-2-1, Yurakucho, Chiyoda-ku, Tokyo

Claims (2)

[Claims] 1. A metal stair support frame for supporting both ends of a tread plate and a riser plate is mounted on opposing wall surfaces surrounding a stair, and the metal stair support frame is provided in a vertical direction of the stairs. Each of the divided frames includes a fixed frame formed in an elongated bar shape along the slope of the stairs, and a horizontal tread support portion mounted on the upper surface of the fixed frame to support the tread. And a vertical riser plate supporting portion for supporting the riser plate, and a step board frame integrally formed in a step-like manner, and the fixed frame and the step board frame are fixed to the wall by abutting against the wall surface. A staircase, wherein each of the steps is provided. 2. The tread support portion is characterized in that a horizontal tread support piece and a wall mounting portion which is suspended in a direction perpendicular to the tread support piece and abuts against a wall surface are integrally formed. The staircase according to claim 1, wherein